Open Source Computational Fluid Dynamics Modelling Improves Wastewater Pond Design
Annual Conference
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This paper describes how open source modeling software can be used to optimize pond design without having to rely on expensive off-the shelf software.
It explains the basic elements of the modeling toolbox and takes the Ohope Waste water pond improvement project as a real world example, where pond performance was improved with regards to E.coli reduction from 1.17 (winter operation) and 1.53 (summer operation) log units to 1.89 and 2.86 respectively. This is an increase in efficiency of 61 % (winter operation) and 87 % (summer operation). The reduction rates of E.coli counts were calculated using a segregated flow model and the RTD curve provided by the simulation.